 However, in April of that year, while playing baseball for the Longhorns, he noticed pain in his arm that wouldn't go away, numbness and blue fingertips.After first suspecting nerve damage it was determined that he had blood clots, two in his right hand and in one in his elbow, so in May of that year, he ended his career without ever playing a down in the NFL.The cause of the injury was stretching in the artery caused by throwing a baseball, and was similar to the injury that ended the career of Sandy Koufax.